1131497 has 8 divisors (see below), whose sum is σ = 1186056. Its totient is φ = 1078272.

The previous prime is 1131491. The next prime is 1131509. The reversal of 1131497 is 7941311.

It can be written as a sum of positive squares in 4 ways, for example, as 885481 + 246016 = 941^2 + 496^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131497 - 2¹⁴ = 1115113 is a prime.

It is a super-2 number, since 2×1131497² = 2560570922018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (148257).

2^1131497 is an apocalyptic number.

It is an amenable number.

1131497 is a deficient number, since it is larger than the sum of its proper divisors (54559).

1131497 is an equidigital number, since it uses as much as digits as its factorization.

1131497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667.

The product of its digits is 756, while the sum is 26.

The square root of 1131497 is about 1063.7184777938. The cubic root of 1131497 is about 104.2040188890.

It can be divided in two parts, 11314 and 97, that added together give a palindrome (11411).

The spelling of 1131497 in words is "one million, one hundred thirty-one thousand, four hundred ninety-seven".